You mean the R4LC. I did fool around with the 3 R2LCs that I have and one of them reliably stops when the engine goes a dozen feet. One seemed to lose lights, horn, and bell but has other engine running sounds...but then when I hit the "R", I got lights and no horn, bell. So I went carefully thru the whole programming again and got the horn, bell. But lost the horn, bell the next time I started up the layout. Oh well. I have never had so much trouble in any of the TMCC engines that I have had with this SD40 with the two AC motors in it.
It remains that I have one R2LC that seems to have all the features, and does not stall...so far.
I am looking forward to the R4LC.